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'''Aleks Peshkov''',<br/>
a Russian software developer and computer chess programmer. Aleks contributed to various methods of generating [[Sliding Piece Attacks|sliding piece attacks]] in [[Bitboards|bitboards]], most notably he pioneered in the [[Hyperbola Quintessence]] approach <ref>[http://www.talkchess.com/forum/viewtopic.php?topic_view=threads&p=140314 Re: BitBoard Tests Magic v Non-Rotated 32 Bits v 64 Bits] by [[Aleks Peshkov]], [[CCC]], August 25, 2007</ref> regarding the [[General Setwise Operations#Union|union]] of [[On an empty Board#PositiveRays|positive]] and [[On an empty Board#NegativeRays|negative ray-attacks]], further utilizing disjoint ray-attacks in conjunction with own inverse and [[Flipping Mirroring and Rotating|mirroring or flipping]] distributive [[General Setwise Operations#ExclusiveOr|xor]] instruction, also suggesting [[SSSE3#Peshkov|SSSE3 Hyperbola Quintessence]] using the [[SSSE3#Pshufb|Pshufb]] instruction for the [[Flipping Mirroring and Rotating#FlipVertically|vertical flip]].
Aleks also supported the [[Stockfish]] development in making test resources available <ref>[httpshttp://web.archive.org/web/20151128030323/http://blog.stockfishchess.org/post/6064085404/stockfish-19 Stockfish Blog - Stockfish 1.9], October 2, 2010([https://en.wikipedia.org/wiki/Wayback_Machine Wayback Machine])</ref>.
=See also=
'''[[People|Up one Level]]'''
[[Category:Chess Programmer|Peshkov]]
[[Category:Stockfish Contributor|Peshkov]]
